| abstract |
The present invention is a thermosetting coating composition comprising an aliphatic polycarbonate resin and a crosslinking agent. Aliphatic polycarbonate resins are derived from hydroxyl containing compounds including 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD) and 1,4-cyclohexane dimethanol (CHDM) do. Coatings made with these polycarbonates exhibit excellent toughness, and they have a high hardness while maintaining a high level of flexibility / impact resistance. These polycarbonate resins also showed better hydrolytic stability compared to their polyester counterparts. |